Lenovo B40-30 Hardware Maintenance Manual page 53

Figure 11. Removal steps of system board (continued)
Disconnect the USB board connector in the direction shown by arrow
disconnect the EDP connector in the direction shown by arrow
2
d
Remove the screw . Pull the DC‐IN connect from its cavity in the direction by
e
arrow . Then remove the system board in the direction by arrow
Step Screw (quantity)
7
d d
M2.5 x 4 mm, flat‐head, nylok‐coated (1)
When installing:
• Make sure USB, HDMI, and the VGA of the system board attached into its
holes on the base properly. Improper placement of the jacks may cause
damage.
• Make sure that the connectors are attached firmly to the system board.
Lenovo B40-30/B40-45/B40-70
5
4
6
b
. Then
c
.
f
.
Color Torque
Black 2.0~2.5kgf.cm
49